CVE-2023-0750 Yellowbrik PEC-1864 authentication bypass

Critical 9.8 Published Updated

Attackers can bypass client-side JavaScript authentication to modify device settings, compromising stream integrity and causing denial of service.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-0750?

CVE-2023-0750 is a critical authentication bypass vulnerability in Lynx Technik AG Yellowbrik, published on 6 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Yellobrik PEC-1864 implements authentication checks via javascript in the frontend interface.  When the device can be accessed over the network an attacker could bypass authentication.

This would allow an attacker to : - Change the password, resulting in a DOS of the users

- Change the streaming source, compromising the integrity of the stream

- Change the streaming destination, compromising the confidentiality of the stream

This issue affects Yellowbrik: PEC 1864. No patch has been issued by the manufacturer as this model was discontinued.

Weakness: CWE-311, CWE-602

Which versions are affected by CVE-2023-0750?

It affects 1 product.

Products include Lynx-Technik Yellobrik Pec 1864 Firmware.

How do I fix CVE-2023-0750?

No fix has been published for CVE-2023-0750 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-0750 being exploited?

There is no known exploitation of CVE-2023-0750 in the wild and no public exploit code.

Sources

Also known as GHSA-x7hm-jh97-58mq.

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